The Castle Doctrine

The Castle Doctrine

Jason Rohrer · January 29, 2014 · Indie, Massively Multiplayer, Strategy, Perma Death, Difficult

Buy The Castle Doctrine from Steam at $1.99 — the cheapest of 1 store we compare.

PC
Mixed49% · 38058Metacritic
Best price 25 Fair price
$1.99-50%
$3.99lowest tracked $0.99
Steam Buy at Steam

Prices last checked

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Where to buy The Castle Doctrine — official stores

Steam
Steam
Standard Edition · Steam
-50%
$1.99
$3.99
Buy

The Castle Doctrine price by region

The Castle Doctrine costs £1.44 in the United Kingdom, €1.64 in Europe (EUR), $1.99 in the United States, CA$2.32 in Canada, NZ$2.59 in New Zealand, $2.69 in Georgia (USD), A$2.97 in Australia, R$4.34 in Brazil and zł7.24 in Poland right now.

Cheapest The Castle Doctrine offer in each region, in local currency
RegionBest priceOfficial storeKey shopStores
United Kingdom £1.44 −50% £1.44 — 1
Europe (EUR) €1.64 −50% €1.64 — 1
United Statesyour region $1.99 −50% $1.99 — 1
Canada CA$2.32 −50% CA$2.32 — 1
New Zealand NZ$2.59 −50% NZ$2.59 — 1
Georgia (USD) $2.69 $2.69 — 1
Australia A$2.97 −50% A$2.97 — 1
Brazil R$4.34 −50% R$4.34 — 1
Poland zł7.24 −50% zł7.24 — 1

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

Screenshots

About The Castle Doctrine

✦ AI summary

The Castle Doctrine is a multiplayer burglary and home defense game set in 1991 where you build security systems to protect your house and family from other players while studying their homes to rob them yourself. Every action is permanent and irreversible—when you die you lose everything, when you rob someone you destroy their progress, and there's no randomness to hide behind, making every failure entirely your own.

The Castle Doctrine is a massively-multiplayer game of burglary and home defense. It's 1991, and things are bad. You're a guy with a house and family. Other players are coming to take what's yours. Build security to stop them. Study their houses, buy tools, and break in to take what's theirs. Everything you do is permanent.

I'm Jason Rohrer, and The Castle Doctrine is my 10th game. It's a bit hard to describe, because there's never been anything quite like it before. It's a brutal game in terms of its perma-death and perma-destruction consequences, and it is turn-based, so it's rather Rogue-like. But building such a brutal game in a multiplayer context, with absolutely no cushion between players to stop them from brutalizing each other, is quite strange and new.

Everything is real in this game. When you rob someone, you are actually hurting another player in a permanent way by destroying and stealing their hard work. When someone dies in this game, they lose everything and start over. If you devise perplexing security systems, you can perma-death other players when they come to rob you. Watching those security tapes, where someone gets what's coming to them, is an exhilarating experience. On the other hand, you just killed someone and perhaps caused them to lose days of their hard work. And you've been on the other side too, losing everything because of some thoughtless move you made in someone else's house.

But there is no randomness in this game, so everything is fair. When you die, it is always your fault. When things get dicey, you can always retreat back out the front door to save your own neck. Of course, human folly will get the better of you.

Here's what you get when you buy the game:
  • A lifetime account on the central world server that I'm running.
  • Access to the full game source code (after launching the game on Steam, go here).
  • Everything you need to run your own game server (requires a PHP/MySQL web server, download the source bundle to get started).

The Castle Doctrine — game info

Platforms
Windows, macOS, Linux / SteamOS
Steam Deck
Playable
Player modes
Multiplayer, Cross-platform multiplayer
PC Game Pass
Not included

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

✦ AI summary

The Castle Doctrine is a psychologically intense home-building and heist game with an excellent core concept that forces meaningful, irreversible decisions, but players consistently cite its punishing mechanics as a barrier to enjoyment—particularly the brutal building system that wipes all progress on a single failed test run and the harsh inventory management.

Recommended Mar 7, 2025
While the game seems dead at the moment, the game itself is excellent. Its more unforgiving than it needs to be, for example having to empty your entire backpack just for leaving a house seems pretty unnecessarily harsh. But for the most part the game's concept and execution is fantastic.
7 found this helpful
Not recommended Apr 16, 2026
not going to lie, this game has most likely the MOST annoying building system of any game ive played so far, after you build your house you have to test it, and if you accidently die while testing it, do you get to redo it and adjust it so its actually possilbe? NO! you have to reset ALLLL your progress. like ALL OF IT! no saves, no undos, just gone. 0/20 would NOT reccomend :/
4 found this helpful
Recommended Apr 10, 2026
The Castle Doctrine, created by Jason Rohrer, is a game that deliberately rejects conventional ideas of comfort and accessibility in favor of something far more psychological and uncompromising. At its core, it operates on a simple premise: you build a home, protect your valuables, and attempt to steal from others doing the same. Yet this straightforward loop quickly evolves into a tense and often unsettling experience that revolves less around mechanical mastery and more around anticipation, fear, and the consequences of irreversible decisions. The structure of the game is built on a duality that constantly forces players to switch perspectives. On one side, you are a homeowner designing intricate defenses—laying down traps, wiring security systems, placing guard dogs, and shaping your house into a maze meant to confuse and punish intruders. On the other side, you become the intruder, carefully stepping through someone else’s creation, trying to interpret their logic and avoid fatal mistakes. Every house is designed by another player, which means every infiltration feels like a personal encounter with another human mind. Some layouts are straightforward, others are devious and al…
2 found this helpful
Recommended Aug 11, 2026
Very enjoyable game, get your revenge against Mr. Getz
Recommended May 22, 2026
i loved the gameplay but has no players anymore :[
Recommended Jan 25, 2025
underrated

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